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2. A halo-orbit lunar station;Farquhar;Astronaut. Aeronaut.,1972
3. Dynamics and Mission Design Near Libration Point Orbits–Volume 1: Fundamentals: the Case of Collinear Libration Points;Gómez,2001
4. Low-Energy Lunar Trajectory Design;Parker,2014
5. Solar System Dynamics;Murray,1999